I have a 2000 Audi S4. Never had a single issue with the stock k03 turbos with 94,000 miles strong. Up until recently I noticed that after pushing it hard, theres a dark oil lightly sprayed in the wheel well on the driver side. Obviously it must be an issue with the turbo because The temp guage and coolant temp guage rise a little after doing so and then drop down after i kept it at low rpm's. Would this most likely just need a new oil feed/return line? The motor still runs strong with no noises so im assuming its not the turbo itself. Any feedback guys?

p.s. Im doing a rs4/rs6 k04 swap soon so I just need a temporary fix to hold it over. Im well aware that the stock turbos should have gone long ago haha

 

i would try to just get it on a lift and back track it.

 

In the wheel well?

have you checked your CV boots?

 

would the cv boot leaking have anything to do with the coolant temp and oil temp going up though? i have had the whole RIGHT front cv axle assembly replaced. the drivers side front hasnt been. so that could explain the greasy sustance in the wheel well. but the temps going up then settling at lower rpms still doesnt make sense then. any ideas?

 

Well, yeah, that would most likely explain the residue in the wheel well. Easiest thing to do is get a jack, lift the car up a little bit and just check the outer boot for tears. I can't imagine how an oil feed leak could "spray" into the wheel well.

And more likely than not, when you push a car "hard" it will increase the temperature of the engine. I mean... it's difficult not to be blunt, but higher engine temps would equate to higher coolant and oil temps; it's not necessarily the turbos. If it's just a small increase you should have nothing to worry about.

And if you're running a stock ECU, the K03's have been known to last up to 140k+ miles without problems. Higher boost and poor maintainence are what really cause them to fail before the 100k mark.

 

Ok Il check the driverside cv boot for any tears tomorow. If there is, Il most likely just replace the whole cv assembly being its only about $50 more for the part. I have another recent thread posted about a fuel system issue, if you could put feedback and possible solutions thatd be great. thanks guys